单项选择题
A./B./swapC./usrD./export/home
A.patch -p < ./path-to-patchB.patchadd ./path-to-patchC.patch_add ./path-to-patchD.pkg_add ./path-to-patch
A.–rwxrwxrwxB.–rwxrw-r--C.–rwxr—rw-D.–rwx-wx-r--E.都不是